Hyunsik Choi created TAJO-1024:
----------------------------------
Summary: RpcConnectionPool::getConnection can cause NPE at
initialization
Key: TAJO-1024
URL: https://issues.apache.org/jira/browse/TAJO-1024
Project: Tajo
Issue Type: Bug
Reporter: Hyunsik Choi
Priority: Minor
I can see the following NPE exception when I submit the first query after
cluster startup. Although the NPE does not abort a running query, it should be
fixed.
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2014-09-02 09:41:12,925 INFO org.apache.tajo.worker.TajoResourceAllocator:
Start TajoWorkerAllocationThread
2014-09-02 09:41:12,970 INFO org.apache.tajo.worker.TajoResourceAllocator: Stop
TajoWorkerAllocationThread
2014-09-02 09:41:12,970 INFO org.apache.tajo.master.querymaster.SubQuery:
SubQuery (eb_1409618466499_0001_000001) has 3 containers!
2014-09-02 09:41:13,010 ERROR org.apache.tajo.master.ContainerProxy:
java.lang.NullPointerException
at
org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:87)
at
org.apache.tajo.master.TajoContainerProxy.assignExecutionBlock(TajoContainerProxy.java:99)
at
org.apache.tajo.master.TajoContainerProxy.launch(TajoContainerProxy.java:70)
at
org.apache.tajo.worker.TajoResourceAllocator$LaunchRunner.run(TajoResourceAllocator.java:170)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
2014-09-02 09:41:13,010 ERROR org.apache.tajo.master.ContainerProxy:
java.lang.NullPointerException
at
org.apache.tajo.rpc.RpcConnectionPool.getConnection(RpcConnectionPool.java:87)
at
org.apache.tajo.master.TajoContainerProxy.assignExecutionBlock(TajoContainerProxy.java:99)
at
org.apache.tajo.master.TajoContainerProxy.launch(TajoContainerProxy.java:70)
at
org.apache.tajo.worker.TajoResourceAllocator$LaunchRunner.run(TajoResourceAllocator.java:170)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
2014-09-02 09:41:13,031 INFO org.apache.tajo.worker.TaskRunner: Tajo Root Dir:
hdfs://localhost:8020/tajo
2014-09-02 09:41:13,031 INFO org.apache.tajo.worker.TaskRunner: Worker Local
Dir: /tmp/tajo-hyunsik/tmpdir
2014-09-02 09:41:13,047 INFO org.apache.tajo.worker.TaskRunner: QueryMaster
Address:/172.20.10.7:28093
2014-09-02 09:41:13,048 INFO org.apache.tajo.worker.TaskRunnerManager: Start
TaskRunner:eb_1409618466499_0001_000001,container_1409618466499_0001_01_000003
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